I'm building camera device which is able to take pictures of paragliders in mid air.
To let the camera know where the glider is I thought about using GPS data from the pilot's smartphone.
My question is: What are possible ways to transmit the GPS data to the groundstation and which can be considered a good solution?
I thought about sending the data to a server via some mobile network, but a direct communication solution would be preferable.
The pilot has mid-air pretty good mobile reception and the maximum distance between pilot and ground station is around 3km.